David Davis Posted November 28, 2023 Author Share Posted November 28, 2023 I see that it has taken me two years to get this far. It was intended as a "quick-build" but unfortunately both life and death have got in the way. I made a bit of a horlicks painting the canopy framing and will have to send off for another one when I get my pension! 1 Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted November 29, 2023 Share Posted November 29, 2023 (edited) On 27/11/2023 at 12:52, David Davis said: I am going to give the cowlings to a bloke in the club who is the panelbeater with the local Volkswagen agency! Hi Dave . Ask your mate if he can spray the cowl with single stage 2k paint. If painted with base and clear the base coat can be attacked on edges by glow fuel residue then bubbles and lifts slowly creeping underand lifting the fuel proof clearcoat. Ask me how I know? Water based base coats may be ok but polyester just melts with glowfuel (methanol) . Edited November 29, 2023 by Engine Doctor Quote Link to comment Share on other sites More sharing options...
David Davis Posted November 29, 2023 Author Share Posted November 29, 2023 I expect I'll see him on Sunday when we have a meeting to organise next year's programme of events. On the other hand he lives a fair old distance away and he became a father about eighteen months ago so his time is somewhat limited these days... Quote Link to comment Share on other sites More sharing options...
David Davis Posted December 13, 2023 Author Share Posted December 13, 2023 Making progress but still some way to go. 3 Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted December 13, 2023 Share Posted December 13, 2023 Nice scheme! Quote Link to comment Share on other sites More sharing options...
David Davis Posted December 13, 2023 Author Share Posted December 13, 2023 Strongly influenced by the Cloud Models scheme. Quote Link to comment Share on other sites More sharing options...
Murat Kece 1 Posted December 13, 2023 Share Posted December 13, 2023 (edited) I got this from a friend as part-built.. I think it is old. It is very light and looks fragile. I called it CAP20 as I was not sure what model is this and who produced it. It is maidened today. It flies great.. Edited December 13, 2023 by Murat Kece 1 1 Quote Link to comment Share on other sites More sharing options...
Murat Kece 1 Posted December 13, 2023 Share Posted December 13, 2023 Oops. I post it in the wrong place .. It should be in "forum-members-new-models-lets-see-them".. Quote Link to comment Share on other sites More sharing options...
David Davis Posted March 19 Author Share Posted March 19 (edited) Yesterday I hinged the rudder and elevator to the model. I used large Kavan pinned hinges and for the first time I used De Luxe Materials Superphatic glue as the adhesive. I had been impressed by the quality of this glue when building a wing for my Baron which featured depron wing ribs, also a first for me. Previously I had always used epoxy as the glue for hinges and I'd always applied some form of grease to the pivot before applying the glue. I usually used butter for this purpose! As Superphatic is a water based glue I did not bother with greasing the pivot. I placed five spots of Superphatic on each side of one leaf of each hinge. These were then inserted into the tailplane. Five more spots on each side of the other leaf then I fitted the elevator. I did the same with the rudder. By yesterday evening I was able to lift the model and wag it about holding on to the rudder and elevator! Thats without any pins or cocktail sticks. Note the usual immaculately tidy workshop! Having turned 76 earlier in the month I have decided to treat myself and the model to a white GRP undercarriage from Carbon Copy. Edited March 19 by David Davis 1 Quote Link to comment Share on other sites More sharing options...
David Davis Posted 2 hours ago Author Share Posted 2 hours ago After weeks on very little activity I have made considerable progress in the building of the Mystic over the last few days mainly by laying off the vino! The white undercarriage from Carbon Copy turned up and it's a lovely piece of kit however, it looks too small for the model. This is my fault for not reading the dimensions properly. A rather heavy undercarriage from my WOT 4 XL, which went up in flames in the Great St Valentine's Day LiPo Explosion was fitted and I the rear wheel assembly was taken from my ARTF Acrowot which I landed in a tree, depth perception not being my strong suit! I'm not sure it's heavy enough for the job. All of the control surfaces are now hinged and the servos have been installed. I am trying out Savox metal geared servos on the control surfaces for the first time. They seem to be well made. I still need to make a hatch for the underside between the firewall and the main former. However, last night, with the engine and all servos in place and the rx battery temporarily taped into postion, I decided to check the centre of gravity. I was expecting the model to be nose heavy because the Laser 155 is so much heavier than a 61 two stroke for which the Mystic was designed. However, I found the opposite to be true, it's tail heavy. None of the horns or pushrods have been fitted but they will only exacerbate the situation. I suppose I could add lead to the nose and remove it after flight testing. Alternatively I could move the rudder and elevator servos from the rear fuselage and install them in a more conventional position above the wing alongside the throttle servo. I will borrow the club's cg contraption to ascertain the precise position of the balance point because I've only been able to use my finger tips so far. At the moment the undercarriage is bolted into place with nylon bolts. Would steel bolts be a better option? My landings are not too bad these days but my first landing with this model will be its maiden landing and if I cannot manage to land it on our 8 metre-wide tarmac runway, there's a fair chance of my catching a wheel in a mole hole in the grass strip alongside. As ever, the views of the cognoscenti are keenly sought. PS. The cockpit is only resting in position in the picture below, it's not glued in place. I was expecting the model to be nose heavy so bought a pilot. He is quite big and heavy but I suppose I'll have to leave him out now that the model has turned out to be tail heavy. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted 1 hour ago Share Posted 1 hour ago (edited) Looking good David. With mine I had thought about rear mounted servos but had decided against it, you have confirmed my views, so thanks for that! I would stick with metal bolts for the U/C rather than nylon, unless you are coming in very, very fast the risk of ripping the U/C out should be very low to a man of your calibre. I've added flaps to my build to assist with the landing speed, goodness knows how well they will perform. PS I like the wing to fuse fillet mod you've done, I may have to copy that! PPS Servo lead poking out. 😉 Edited 1 hour ago by Ron Gray Quote Link to comment Share on other sites More sharing options...
David Davis Posted 1 hour ago Author Share Posted 1 hour ago The fillet is part of the kit Ron. Have a look at Cloud Models version which inspired the scheme I chose, or Galaxy Models own picture.. Yes I noticed the servo lead. The receiver is not installed. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted 1 hour ago Share Posted 1 hour ago Hmm, is it? must have missed that so will look again - thanks. Quote Link to comment Share on other sites More sharing options...
David Davis Posted 1 hour ago Author Share Posted 1 hour ago Paragraph 7 in the "Wings" instructions. Part 39. Quote Link to comment Share on other sites More sharing options...
Tim Flyer Posted 30 minutes ago Share Posted 30 minutes ago (edited) Here is my Mystic taken after another good flying session last week. It gets regular use and is a smooth easy to fly plane. I have tail mounted servos and power is an OS 120AX with added nose weight. A laser 155 would be nicer (or a 160 twin😊) but I don’t have one spare . My undercarriage is from a Wot 4XL but reversed to sweep back due to its fixing position. My C of G is currently as per the plan but I will probably reduce nose weight a bit and bring it back as the plane requires a fair bit of forward stick when inverted. It knife edges very well and rolls smoothly. coming in it does float a fair bit especially coming in with light winds. but I can soon stop that by engaging the “up flapperons” that I also use on my Acrowot. Happy flying all! Edited 22 minutes ago by Tim Flyer Added photo 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted 20 minutes ago Share Posted 20 minutes ago 43 minutes ago, David Davis said: instructions. Sorry, remind me, what are they? Quote Link to comment Share on other sites More sharing options...
Tim Flyer Posted 19 minutes ago Share Posted 19 minutes ago (edited) Just added the photo in the workshop to show undercarriage. Ps I moved the cockpit for on my build as I preferred that look. Edited 19 minutes ago by Tim Flyer Quote Link to comment Share on other sites More sharing options...
Tim Flyer Posted just now Share Posted just now Regarding the wing fairing fillet in my kit I think it was a block of balsa and I think some thin ply that I stuck to the fuselage side to make a smoother curve after adding the wings. I then trimmed and sanded it to match the wing . That part of the build was slightly fiddly . Quote Link to comment Share on other sites More sharing options...
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